Speaker



FIG. 1 is a perspective view of a speaker showing my new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a top view thereof; and,

FIG. 8 is a bottom view thereof.

The broken lines showing portions of the speaker represent unclaimed portions of the claimed design and form no part of the claimed design. 

CLAIM The ornamental design for a speaker, as shown and described. 